1212013402044 has 12 divisors (see below), whose sum is σ = 2828031271464. Its totient is φ = 404004467344.

The previous prime is 1212013402043. The next prime is 1212013402069. The reversal of 1212013402044 is 4402043102121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212013402043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50500558407 + ... + 50500558430.

It is an arithmetic number, because the mean of its divisors is an integer number (235669272622).

Almost surely, 2^{1212013402044} is an apocalyptic number.

It is an amenable number.

1212013402044 is an abundant number, since it is smaller than the sum of its proper divisors (1616017869420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212013402044 is a wasteful number, since it uses less digits than its factorization.

1212013402044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101001116844 (or 101001116842 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1212013402044 its reverse (4402043102121), we get a palindrome (5614056504165).

The spelling of 1212013402044 in words is "one trillion, two hundred twelve billion, thirteen million, four hundred two thousand, forty-four".